51连环 vs BookShelf Library Book Manager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
51连环
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APP 是一款提供中国连环画目录查询的连环画收藏工具。提供49-94年所发行的近4万个连环画目录查询功能。
BookShelf Library Book Manager
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BookShelf — Your Private Book Catalog. Books piling up and you can't remember what you own? BookShelf lets you scan an ISBN barcode to instantly fetch the title, author, and cover. Every book gets its own digital record. 【Core Features】 ISBN Scan (Key Feature) • Scan an ISBN barcode for instant book lookup • Auto-fetches title, author, and cover via Google Books API (no key required) • One scan, one book added — done in seconds • Manual entry for older books without ISBN codes Visual Bookshelf • Grid view organized by book covers, like a real wooden shelf • List view sorted by title or author • Share your bookshelf screenshot — "Check out my collection!" Smart Tags • Read / Unread / Lent Out — three statuses at a glance • Know who borrowed what and when • Custom tags to organize your way Quick Search • Search by title, author, or ISBN • Filter by reading status • Lent-out books in one tap CSV Export • Export your full catalog as a CSV file • Includes title, author, ISBN, status, and loan info • Your data always belongs to you Privacy & Security • 100% local SQLite storage — no internet required after lookup • No sign-up, no login, no data upload • Your book collection is your business Contact: 493092161@qq.com Terms of Use:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: 51连环 at none against BookShelf Library Book Manager's 3. 51连环 also leads on iOS requirement (8.0 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. BookShelf Library Book Manager sells 3 in-app purchases, starting at $2.99 per year. 51连环 asks for nothing beyond the download.
| Parameter | 51连环 | BookShelf Library Book Manager |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 30 MB | 21 MB |
| Age rating | 4+ | 12+ |
| Developer | 上海曜宁信息科技有限公司 | 磊 刘 |
In-app purchases
51连环
No in-app purchases
BookShelf Library Book Manager
- Shuge PRO — Yearly$2.991 Year
- Shuge PRO — 1 Year$3.99
- Shuge PRO — Lifetime$4.99









